Descaling wheel



E. B. JAQUES DESCALING WHEEL Feb. 8, 1955 Filed June 21, '1954 INVENTOR.

E I MO B. JAQLJES ATTORNEYS United States PatentO DESCALING WHEEL Elmo B. Jaques, Long Beach, (Ialifl, assignor to Descaling Equipment Co., Inc., Long Beach, Calif., a corporation of California Application June 21, 1954, Serial No. 438,113

Claims. (Cl. 29-81) The present invention relates to improvements in a descaling wheel. It has particular reference to structural improvements and refinements over the descaling wheel shown in my copending application, Serial No. 340,809, which was filed in the United States Patent Oflice on March 6, 1953.

As pointed out in the above-mentioned application, descaling wheels are utilized for removing scales, rust and other foreign material from plates, pipes, tanks, decks and hulls of ships, etc. Although the descaling wheel shown in the copending case is admirably adapted for the purpose for which it was designed, practice has shown that it is somewhat heavy for being manually held by an ordinary individual, and especially when the wheel is being turned at a relatively high speed.

Accordingly, a cardinal object of this invention is to provide a lightweight descaling wheel, which may be readily held by an individual and effectively used for descaling purposes without difficulty.

Another object is to provide a descaling wheel, which will remove any foreign substance from a surface without marring or damaging the latter. Briefly described, the improved Wheel includes a laminated body having abrading hammers swingably anchored thereto, in such a manner that the hammers may swing into the confines of the laminated body, when the wheel is operating too close to the surface being cleaned. When this occurs, the hammers will be precluded from damaging the workpiece.

Moreover, the laminated body is fashioned with camshaped portions, which will contact with the surface being cleaned, when the descaling wheel is brought too close to the work-piece. This will cause a slight jarring of the wheel, and thereby indicate to the operator that the wheel should be inclined away from the work surface into a more effective cleaning position.

Other objects and advantages will appear as the specification proceeds. The novel features will be set forth in the claims hereunto appended.

Drawing For a better understanding of the invention, reference should be had to the accompanying drawing, forming part of this application, in which:

Figure 1 is a longitudinal vertical sectional view taken through my descaling wheel, portions being shown in elevation;

Figure 2 is a transverse sectional view taken along the plane IIII of Figure 1;

Figure 3 is an end elevational view of the assembled descaling wheel, as observed from the right-hand side of Figure 1;

Figure 4 is an oblique view of one of the rotatable plates, which is utilized for providing the laminated body of the descaling wheel; and

Figure 5 illustrates a partially-worn abrading hammer.

While I have shown only the preferred form of my invention, it should be understood that various changes, or modifications, may be made within the scope of the annexed claims without departing from the spirit thereof.

Detailed description In carrying out my invention, I provide a plurality of rotatable plates A1 and A2 of the shape shown in Figures 2 and 4. These plates are adapted to be assembled on an arbor nut B to provide a laminated body for a descaling wheel, as illustrated in Figure 1. In reality, all of these plates are identical with one another, the reference character A1 being use to designate alternate plates, and A2 the intervening-plates.

It will be noted that each of these plates is fashioned with an axial bore 10, which is adapted to have a cylindrical hub 11 of the arbor nut B telescoped therethrough. When thus assembled, the plates are abutted one against the other. As shown, each plate has a marginal rim 12 having a pair of diametrically-opposed recesses 1414 extending thereinto from its rim. Of course, the number of these recesses in each plate may be varied to meet the requirements.

As shown in Figures 1 and 2, abrading hammeds C1 and C2 are swingably mounted in the recesses 1414 of the plates A1 and A2, respectively. All of these hammers are identical with each other, and are arranged for swinging movement in the general plane of the plates in which they are arranged. The inner ends 15 of the hammers are semi-cylindrical and bear against curved saddles 14a of the recesses so as to be supported thereby.

For the purpose of securing all of the plates A1 and A2 in assembled relation on the arbor nut B, outboard and inboard retaining discs D1 and D2, respectively, are abutted against opposing ends of the laminated body, as illustrated in Figure 1. Arbor rods 16 are arranged parallel to the axis of the arbor nut and have reduced ends 17, which are inserted into holes 18 fashioned in these discs. The arbor rods extend through the recesses 14 concentrically with the curved saddles 14a, and further project through openings 19 formed in the plates (see Figure 4). Additional openings 20 have been formed in the plates to make the latter lighter in weight. As shown in Figure 2, a total of four arbor rods 16 have been provided.

Any suitable means may be used to rotate the descaling wheel in the direction of the arrows 21. For this purpose, I have shown a motor E, which has its shaft 22 threaded into an axial bore 23 fashioned in the hub 11. The outer end of the arbor nut B has an enlarged head 24 thereon, which bears against the outboard disc D1. As disclosed in Figures 1 and 3, a thrust washer 25 is interposed between the motor E and the inboard disc D2. This washer is keyed or otherwise secured to the shaft 22 so as to be held against longitudinal movement. The direction of the threads is such as to cause the arbor nut B to tighten upon the shaft 22 as the motor is turned, thereby clamping all of the plates A1 and A2 together. In practice, the descaling wheel is rotated at 3000 revolutions per minute, but I do not wish to be limited in this respect.

With particular reference to Figure 2, it will be noted that the recesses 14-14 in alternate plates A1 are staggered relative to those in the intervening plates A2, with alternate plates forming walled barriers over lateral sides of the recesses in the intervening plates and vice versa. This arrangement will retain the hammers C1 and C2 in their respective recesses against movement along the length of the arbor rods 16. Moreover, these rods preclude the assembled plates from rotating relative to one another, and have the hammers swingably anchored thereon.

As the plates are rotated, centrifugal force will cause the hammers to swing on the arbor rods 16 until the leading edges 26 of these hammers abut hook-shaped stops 27 defined by the plates A1 and A2. However, as the outer abrading ends 28 of the hammers strike against the work-piece'W, the hammers will rebound, as suggested by the arrow 29 in Figure 2. The recesses 14 are dimensioned to receive the hammers, with the latter being entirely confined inwardly of the rim portions 12a of the walled barriers. The hooks 27 prevent the hammers from swinging into radial positions.

As clearly disclosed in Figures 2 and 3, the rim portions 12a of the walled barriers defining leading and trailing ends 30 and 31, respectively, relative to the direction of rotation of the plates A1 and A2. Moreover, these rim able metal will be removed, thus resulting in a lighterweight descaling wheel.

Secondly, as the hammers C1 and C2 are swung outwardly by centrifugal force, the greater radii at the trailing ends 31 of the curved rim portions 12a will provide longer anvils or stops 27 against which the hammers will strike. Thus the stops 27 have sufficient strength to withstand the hammers being thrown thereagainst.

Thirdly, in the event that the operator should bring the descaling wheel too close to the work-piece W, the curved rims 12a will contact the surface being cleaned. This will result in a slight jarring action, indicating to the operator that the wheel should be slightly inclined away from the work-piece. Also, these curved rims serve as cams and actually will lift the descaling wheel away from the work-piece when the wheel is brought too close to the surface being descaled.

Turning now to Figure 5, the outer abrading end 2s of one of the hammers C1 has been illustrated as being rounded off at 32 due to wear caused by repeatedly striking against the work-piece W. When this condition arises, the hammers should be reversed to thereby interchange their leading and trailing edges 26 and 26', respectively. This will make the descaling action more effective and thus prolong the useful life of the hammers.

In order to positively identity to the user the correct way to reassemble the wheel after it has been disassembled to reverse the hammers, the arrows 21 have been stamped on one side of each of the plates A1 and A2. Also, an arrow 33 has been stamped on the inboard retaining disc D2. When the Wheel is properly assembled, all of the arrows 21, and likewise the arrow 33, will face toward the motor E. Quite obviously, broken or worn hammers may be replaced with facility and ease. The hammers C1 and C2 are fashioned with bores 15 through which the arbor rods 16 extend to thus anchor the hammers to the laminated body, while allowing them to swing relative to the arbor rods.

I claim:

1. In a descaling wheel: a series of plates rotatable about an axis, and being butted one against the other to provide a laminated body; each plate defining a marginal rim, and having at least one recess extending thereinto from its rim; the recesses in alternate plates being staggered relative to those in the intervening plates, with alternate plates forming walled barriers over lateral sides of the recesses in the alternate plates and vice versa; a hammer swingably mounted in each recess for movement in the general plane of the plate in which its recess is fashioned; retaining discs abutting opposing ends of the laminated body; and arbor rods anchored to the discs to extend through said recesses and further project through openings in the plates; the hammers having inner ends swingably mounted on the arbor rods; the hammers being provided with outer abrading ends, which are movable into positions projecting beyond the rims of the plates when the hammers are swung in one direction.

2. In a descaling wheel: a series of plates rotatable about an axis, and being butted one against the other to provide a laminated body; each plate defining a marginal rim, and having at least one recess extending thereinto from its rim; the recesses in alternate plates being staggered relative to those in the intervening plates, with alternate plates forming walled barriers over lateral sides of the recesses in the alternate plates and vice versa; a hammer swingably mounted in each recess for movement in the general plane of the plate in which its recess is fashioned; retaining discs abutting opposing ends of the laminated body; and arbor rods anchored to the discs to extend through said recesses and further project through openings in the plates; the hammers having inner ends swingably mounted on the arbor rods; the hammers being provided with outer abrading ends, which are movable into positions projecting beyond the rims of the plates when the hammers are swung in one direction; the recesses being dimensioned to receive the hammers, when they are swung in the opposite direction, with the hammers being entirely confined inwardly of the rim portions of the walled barriers.

3. In a descaling wheel: a series of plates rotatable about an axis, and being butted one against the other to provide a laminated body; each plate defining a marginal rim, and having at least one recess extending thereinto from its rim; the recesses in alternate plates being staggred relative to those in the intervening plates, with alternate plates forming walled barriers over lateral sides of the recesses in the alternate plates and vice versa; a hammer swingably mounted in each recess for movement in the general plane of the plate in which its recess is fashioned; retaining discs abutting opposing ends of the laminated body; and arbor rods anchored to the discs to extend through said recesses and further project through openings in the plates; the hammers having inner ends swingably mounted on the arbor rods; the hammers being provided with outer abrading ends, which are movable into positions projecting beyond the rims of the plates when the hammers are swung in one direction; the recesses being dimensioned to receive the hammers, when they are swung in the opposite direction, with the hammers being entirely confined inwardly of the rim portions of the walled barriers; the rim portions of the walled barriers defining leading and trailing ends, relative to the direction of rotation of the plates; said rim portions progressively increasing in radii from the leading ends of the barriers to the trailing ends thereof to provide curved surfaces.

4. In a descaling wheel: a series of plates rotatable about an axis, and being butted one against the other to provide a laminated body; each plate defining a marginal rim, and having at least one recess extending thereinto from its rim; the recesses in alternate plates being staggered relative to those in the intervening plates, with alternate plates forming walled barriers over lateral sides of the recesses in the alternate plates and vice versa; a hammer swingably mounted in each recess for movement in the general plane of the plate in which its recess is fashioned; and means swingably anchoring the inner ends of the hammers to the plates; the hammers being provided with outer abrading ends, which are movable into positions projecting beyond the rims of the plates when the hammers are swung in one direction; the recesses being dimensioned to receive the hammers, when they are swung in the opposite direction, with the hammers being entirely confined inwardly of the rim portions of the walled barriers.

5. In a descaling wheel: a series of plates rotatable about an axis, and being abutted one against the other to provide a laminated body; each plate defining a marginal rim, and having at least one recess extending thereinto from its rim; the recesses in alternate plates being staggered relative to those in the intervening plates, with alternate plates forming walled barriers over lateral sides of the recesses in the alternate plates and vice versa; a hammer swingably mounted in each recess for movement in the general plane of the plate in which its recess is fashioned; and means swingably anchoring the inner ends of the hammers to the plates; the hammers being provided with outer abrading ends, which are movable into positions projecting beyond the rims of the plate when the hammers are swung in one direction; the recesses being dimensioned to receive the hammers, when they are swung in the opposite direction, with the hammers being entirely confined inwardly of the rim portions of the walled barriers; the rim portions of the walled barriers defining leading and trailing ends, relative to the direction of rotation of the plates; said rim portions progressively increasing in radii from the leading ends of the barriers to the trailing ends thereof to provide curved surfaces.

No references cited. 

